Hello, Mike
I think that breaking the vehicle part of the TM section down by family of vehicles (FOV) format by listing what the DOD calls a list of available publications (LOAP) would be really useful. Typically the LOAP includes the TMs, lubrication orders (LOs), supply or hand receipt manuals, communications system installation and maintenance manuals etc.
In this case since, unlike the military, we generally perform all levels of maintenance ourselves, the LOAP should be augmented with the FOV specific manuals for troubleshooting and repairing the engine, electrical system, transfer case, transmission, winch etc.
Near or at the top of the vehicle section should be a generic listing for the TMs covering the care and maintenance of tires, batteries, fabric covers, corrosion protection and painting, recovery operations etc.
A FOV LOAP format will likely result in some TMs being listed many times but I think the "one stop shopping" for each FOV will be worth it.
I'll send you a PM. Please say hello to Jean and the boys for me and I hope you are all well.
Lance